Reliable Polymer Industries supplies High Tensile Alloy Fasteners. Reliable Polymer Industries offers PTFE coated studs, bolts and nuts, etc. High Tensile Alloy Fasteners include studs, hex head bolts, square hex head, foundation bolts, jack screws, jack bolts and hex heavy series nuts, etc. They are made from alloy, stainless and carbon steel materials of various grades as per the sizes and specifications according to ASTM A 193 GR. B7/L7/B7M/B8/B16 & ASTM A 194 GR. 2H/2HM/4/7.